REPURCHASE AGREEMENTS (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase Agreements	$ 211,552	$ 162,439
September 30, 2021
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase Agreements	211,552	162,439
Mortgage-backed securities issued or guaranteed by U.S. government-sponsored enterprises | September 30, 2021
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase Agreements	57,842	70,902
Collateralized mortgage obligations issued or guaranteed by U.S. government-sponsored enterprises | September 30, 2021
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase Agreements	151,405	90,015
Obligations of states and political subdivisions | September 30, 2021
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase Agreements	2,305	1,522
Total Collateral -Dependent Non-Accrual Loans | September 30, 2021
Assets Sold under Agreements to Repurchase [Line Items]
Certificates of Deposit, at Carrying Value	$ 1,000	$ 1,000